My developer is trying to convince me to move to .net from PHP.

I have always disliked the idea because of the expenses.
But he's tryiong none the less. I've been using WordPress on a number of websites 
for about a year and am nervous about switching to another 
platform. I have heard very good things about blogengine.net.

Is there a way I can transfer all my wordpress content into it?
Any kind of help would be greatly appreciated!